Pilot Flying of Taxiing Aircraft
Initially, the PF expects that the next airport way-point is either a regular taxiway or
a runway crossing. In the former case the PF proceeds taxiing and in the latter case
the PF may have the SA that crossing is allowed. The characteristics of the visual
monitoring process of the PF depend on the intent SA. In case of awareness of a
conflict, either due to own visual observation or due to a controller call, the PF stops
the aircraft, unless it is already within a critical distance from the runway centre-line.
Further details of taxiing aircraft PF model are given by (Stroeve et al., 2003).